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EMC Avamar File Upload / Authentication Bypass

EMC Avamar File Upload / Authentication Bypass
Posted Jun 21, 2017
Site emc.com

EMC Avamar suffers from authentication bypass and remote file upload vulnerabilities.

tags | advisory, remote, vulnerability, file upload
advisories | CVE-2017-4989, CVE-2017-4990
MD5 | b4a0e80e752dee3e81b370f06160717e

EMC Avamar File Upload / Authentication Bypass

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ESA-2017-054: EMC Avamar Multiple Vulnerabilities

EMC Identifier: ESA-2017-054
CVE Identifiers:
CVE-2017-4989, CVE-2017-4990

Affected products:
EMC Avamar Server Software 7.4.1-58, 7.4.0-242 (CVE-2017-4990)
EMC Avamar Server Software 7.3.1-125, 7.3.0-233, 7.3.0-226 (CVE-2017-4989, CVE-2017-4990)
EMC Avamar Server Software 7.2.1-32, 7.2.1-31, 7.2.0-401 (CVE-2017-4989)
Severity Rating: See below for individual scores

Summary:
EMC Avamar Server contains security vulnerabilities that may potentially be exploited by malicious users to compromise the affected system.

Details:

EMC Avamar Server Authentication Bypass Vulnerability (CVE-2017-4989)

An unauthenticated remote attacker may potentially bypass the authentication process to gain access to the system maintenance page. This may be exploited by an attacker to view sensitive information, perform software updates, or run maintenance workflows.

CVSS v3 Base Score: 8.2 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N)

EMC Avamar Server Unauthorized File Upload Vulnerability (CVE-2017-4990)

An unauthorized attacker may leverage the file upload feature of the system maintenance page to load a maliciously crafted file to any directory which could allow the attacker to execute arbitrary code on the Avamar Server system.

CVSS v3 Base Score: 10.0 (AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H)

Resolution:
Resolutions are available for the following EMC Avamar releases:
Avamar Server Version 7.4.1 with Hotfix 279294
Avamar Server Version 7.3.1 with Hotfix 276676
Avamar Server Version 7.2.1 with Hotfix 277897

EMC recommends all customers apply the appropriate hotfix at the earliest opportunity.

Link to remedies:

To upgrade your EMC Avamar system, contact your account representative or EMC Remote Proactive Customer Support at https://support.emc.com and refer to this article number.

Read and use the information in this EMC Security Advisory to assist in avoiding any situation that might arise from the problems described herein. If you have any questions regarding this product alert, contact EMC Software Technical Support at 1-877-534-2867.

For an explanation of Severity Ratings, refer to EMC Knowledgebase solution emc218831. EMC recommends all customers take into account both the base score and any relevant temporal and environmental scores which may impact the potential severity associated with particular security vulnerability.

EMC recommends that all users determine the applicability of this information to their individual situations and take appropriate action. The information set forth herein is provided "as is" without warranty of any kind. EMC disclaims all warranties, either express or implied, including the warranties of merchantability, fitness for a particular purpose, title and non-infringement. In no event, shall EMC or its suppliers, be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if EMC or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages, so the foregoing limitation may not apply.
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